Foot Valve FV series / Spring Loaded, ANSI 125, Flange 2 1/2" ~ 24"

Type : High Performance
Pressure : ANSI 125
Temperature : 90 C
Size : 1 1/2" ~ 24"
Connection : Flange ANSI 125
Body : Cast Iron
Disc : Bronze
Seat : Buna-N
Screen : Stainless Steel

Crispin Foot Valve FV series is tight sealing required to make sure the Suction Pump is filled with water to prevent Priming when the pump stops operation.
https://crispinvalve.com/check-valves/center-guided/globe-check/